Which north american nations have high standards of living? canada and the u. s. mexico and greenland mexico and canada the u. s. and greenland?

U.S and Canada

Explanation:

Im not sure but I think this is the answer.

just like you man, i personally think its either c or d

explanation:

but good luck with the test man

adopted the practice of proskynesis, a persian court custom that involved bowing down and kissing the hand of others, depending on their rank.